William H. Langer and John D. Horton
2015
Industrial Minerals Permissive Tracts - Diorite and Dolerite in Mauritania, West Africa
vector digital data
Denver, CO
U.S. Geological Survey
http://dx.doi.org/10.3133/ofr20131280Taylor, Cliff D., ed.2015Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II) phase VPDFs, Digital Maps, Excel tablesU.S. Geological Survey Open-File ReportOF 2013-1280Denver, ColoradoU.S. Geological Surveyhttp://pubs.usgs.gov/of/2013/1280/
This dataset includes polygons that describe permissive tracts for industrial minerals - diorite and dolerite deposits in the Islamic Republic of Mauritania (IRM), Africa. See the industrial minerals report for more details.
Created for the "Second Projet de Renforcement Institutionnel du Secteur Minier (PRISM II)" co-financed by the Government of Mauritania and the World Bank (Credit No. IDA-38100 MAU). This data was used in the creation of the map: Reported Industrial Minerals Occurrences and Permissive Areas for Other Occurrences in Mauritania.
2013
None planned
-12.955741
-4.982405
26.000260
15.301751
None
industrial
minerals
diorite
dolerite
permissive
None
Africa
Mauritania
None
Data have been checked to ensure the accuracy of the data. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS and ERDAS Imagine formats, this metadata file may include some terminology specific to those software packages.
This digital database is not meant to be used or displayed at any scale larger than 1:1,000,000.
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046, MS-973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
William H. Langer and John D. Horton
Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.4.4000
The attributes associated with this dataset were derived from published reports and maps.
Tests for integrity have not been performed.
Unknown
The horizontal positional accuracy of the polygon features varies: it is dependent on several factors including the original scale of the base maps used in mapping the geology (which was subsequently used to delineate the mineral resource tracts).
Permissive tracts were digitized based on author selected geologic units from digital geology files and maps (various scales and publications). Tracts were then expanded based on known mineral occurences, structural features and/or geophysical data depending on availability. See the industrial minerals report for more detailed explanations of specific tracts.
2012
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
Vector
G-polygon
8
Transverse Mercator
0.9996
-11.0
0.0
0.0
0.0
coordinate pair
0.6096
0.6096
meters
WGS 1984
WGS_1984
6378137
298.257224
Attribute Table
Table containing attribute information associated with the data set.
Authors
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Tract_Name
Unique name for each tract.
Authors
User defined
Commodity
Commodities for permissive tract.
Authors
User defined
Dep_Type
Deposit type.
Authors
User defined
Remarks
Explanation/basis of how the permissive tract was drawn by authors (specific geology, geophysics, known mineral occurrences, geochemical samples, ect.).
Authors
User defined
Nom_zone
French translation of Tract_Name field.
Authors
User defined
Matière
French translation of Commodity field.
Authors
User defined
Genre
French translation of Dep_Type field.
Authors
User defined
Remarques
French translation of Remarks field.
Authors
User defined
Date
The year the tracts were drawn - 2012.
Authors
User defined
Length
Length of polyline in meters.
ESRI
16096.627409
5750817.41921
meters
Area
Area of polygon in meters squared.
ESRI
4527232.48697
3776605376.74
square meters
U.S. Geological Survey
mailing address
USGS Information Services
Denver
CO
80225-0046
Box 25286Denver Federal Center
1-888-ASK-USGS (1-888-275-8747)
http://ask.usgs.gov
Downloadable Data
This database, identified as OF 2013-1280, has been approved for release and publication by the U.S. Geological Survey. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although these data have been processed successfully on a computer System at the U.S. Geological Survey (USGS), no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.
Shapefilehttp://dx.doi.org/10.3133/ofr20131280http://pubs.usgs.gov/of/2013/1280/None
20150720
John Horton
U.S. Geological Survey
GIS Analyst
mailing and physical address
Denver Federal Center, PO Box 25046
MS 973
Denver
CO
80228
303-236-1921
jhorton@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time